The great end of life is not knowledge but action.

We must not, in trying to think about how we can make a big difference, ignore the small daily differences we can make which, over time, add up to big differences that we often cannot foresee.

The perils of overwork are slight compared to the dangers of inactivity.

We can do anything we want to if we stick to it long enough.

The results you achieve will be in direct proportion to the effort you apply.

Opinion is the medium between knowledge and ignorance.

When I examine myself and my methods of thought, I come to the conclusion that the gift of fantasy has meant more to me than my talent for absorbing positive knowledge.

Teach the ignorant as much as you can; society is culpable in not providing a free education for all and it must answer for the night which it produces. If the soul is left in darkness sins will be committed. The guilty one is not he who commits the sin, but he who causes the darkness.

As the traveler who has once been from home is wiser than he who has never left his own doorstep, so a knowledge of one other culture should sharpen our ability to scrutinize more steadily, to appreciate more lovingly, our own.

It is always advisable to perceive clearly our ignorance.

To furnish the means of acquiring knowledge is the greatest benefit that can be conferred upon mankind. It prolongs life itself and enlarges the sphere of human existence.

The opinion of 10,000 men is of no value if none of them know anything about the subject.

The good life is one inspired by love and guided by knowledge.