The measure of intelligence is the ability to change.

The man who acquires the ability to take full possession of his own mind may take possession of everything else to which he is justly entitled.

To be granted some kind of usable talent and to be able to use it to the fullest extent of which you are capable—this, to me, is a kind of joy that is almost unequaled.

Gentleness is strength under control. It is the ability to stay calm, no matter what happens.

Our ability to reach unity in diversity will be the beauty and the test of our civilization.

The question, 'Who ought to be boss?' is like asking 'Who ought to be the tenor in a quartet?' Obviously, the man who can sing tenor.

It takes all sorts of in and outdoor schooling to get adapted to my kind of fooling.

Plans will get you into things, but you have got to work your way out.

Have to and get to—both are choices. One is negative and one is positive. Choose the right one and it can change your life.

Most bold change is the result of a hundred thousand tiny changes that culminate in a bold product or procedure or structure.

Change how you see and see how you change.

The world hates change, yet it is the only thing that has brought progress.

Maturity is the ability to live in peace with that which we cannot change.

You can’t change how people treat you or what they say about you. All you can do is change how you react to it.

I have to face life with a newly found passion. I must rediscover the irresistible will to learn, to live and to love.

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

To criticize is to appreciate, to appropriate, to take intellectual possession, to establish in fine a relation with the criticized thing and to make it one's own.

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.

It is not reason which is the guide of life, but custom.

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.