He who is cruel to animals becomes hard also in his dealings with men. We can judge the heart of a man by his treatment of animals.

Gravity is only the bark of wisdom's tree; but it preserves it

And no one will listen to us until we listen to ourselves.

It is a wise man that does know the contented man is never poor, whilst the discontented man is never rich.

Do your little bit of good where you are; it's those little bits of good put together that overwhelm the world.

Wisdom... comes not from age, but from education and learning.

You laugh at me because I'm different, I laugh at you because you're all the same.

The very essence of instinct is that it's followed independently of reason.

One just needs a little alertness to see and find out: Life is really a great cosmic laughter.

There are no limitations to the mind except those we acknowledge.

Destiny is not a passive agent that lies in the lap of the Gods, but is an active instrument that lies in your own hands to shape as you will.

Think globally, act locally.

Attachment is the great fabricator of illusions; reality can be attained only by someone who is detached.

Attitude, not Aptitude, determines Altitude.

If you don't want to slip up tomorrow, speak the truth today.

There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self.

It is not enough to have a good mind; the main thing is to use it well.

Loneliness adds beauty to life. It puts a special burn on sunsets and makes night air smell better.

The future is uncertain but the end is always near.

It is the mark of an educated mind to be able to entertain a thought without accepting it.

I've never known any trouble than an hour's reading didn't assuage.