To be wholly devoted to some intellectual exercise is to have succeeded in life.

In walking, the will and the muscles are so accustomed to working together and performing their task with so little expenditure of force that the intellect is left comparatively free.

It doesn't matter how smart you are unless you stop and think.

Men have called me mad; but the question is not yet settled, whether madness is or is not the loftiest intelligence.

Appearances to the mind are of four kinds. Things either are what they appear to be; or they neither are, nor appear to be; or they are, and do not appear to be; or they are not, and yet appear to be. Rightly to aim in all these cases is the wise man’s task.

I have always regarded that Constitution as the most remarkable work known to me in modern times to have been produced by the human intellect, at a single stroke (so to speak), in its application to political affairs.

What a distressing contrast there is between the radiant intelligence of the child and the feeble mentality of the average adult.

Intelligent people tend to have less friends than the average person. The smarter you are, the more selective you become.

I've always felt that a person's intelligence is directly reflected by the number of conflicting points of view he can entertain simultaneously on the same topic.

You will never be able to escape from your heart. So it is better to listen to what it has to say.

Without some goals and some efforts to reach it, no man can live.

There is a proper dignity and proportion to be observed in the performance of every act of life.

The more is given the less the people will work for themselves, and the less they work the more their poverty will increase.

To live is to suffer, to survive is to find some meaning in the suffering.

There are two ways to conquer and enslave a country. One is by the sword. The other is by debt.

Never be bored, and you will never be boring.

Time is a sort of river of passing events, and strong is its current; no sooner is a thing brought to sight than it is swept by and another takes its place, and this too will be swept away.

The weight of this sad time we must obey; speak what we feel, not what we ought to say. The oldest hath borne most: we that are young, shall never see so much, nor live so long.

The aim of art, the aim of a life can only be to increase the sum of freedom and responsibility to be found in every man and in the world. It cannot, under any circumstances, be to reduce or suppress that freedom, even temporarily.

The measure of success is not whether you have a tough problem to deal with, but whether it's the same problem you had last year.

There is no failure except in no longer trying.

If you want to succeed you should strike out on new paths, rather than travel the worn paths of accepted success.

Before a man can accomplish anything of an enduring nature in the world, he must first of all acquire some measure of success in the management of his own mind.

There is only one success—to be able to spend your life in your own way.

The secret of success is conviction and persistence.

Unsuccessful people make decisions based on current situations. Successful people make decisions based on where they want to be.