“You can make even a parrot into a learned political economist – all he must learn are the two words “supply” and “demand.””

They only are wise who know that they know nothing.

Tell a person they are brave and you help them become so.

Silence is as deep as eternity, speech a shallow as time.

One life; a little gleam of Time between two Eternities; no second chance to us for evermore!

A man without a goal is like a ship without a rudder.

Show me the man you honor, and I will know what kind of man you are.

Speech is silver, silence is golden.

Not what you possess but what you do with what you have, determines your true worth.

Do the duty which lies nearest to you, the second duty will then become clearer.

Conviction is worthless unless it is converted into conduct.

A person with a clear purpose will make progress, even on the roughest road. A person with no purpose will make no progress, even on the smoothest road.

Make yourself an honest man, and then you may be sure there is one less rascal in the world.

The merit of originality is not novelty; it is sincerity. The believing man is the original man; whatsoever he believes, he believes it for himself, not for another.

Nothing is more terrible than activity without insight.

Egotism is the source and summary of all faults and miseries.

Weak eyes are fondest of glittering objects.

Take it moment by moment, and you will find that we are all, as I’ve said before, bugs in amber.

Here was a chimpanzee using a tool. That was object modification- the crude beginning of tool making.

Attacks by other chimpanzees are the second most frequent cause of death at Gombe, after disease.

I never drink water because of the disgusting things that fish do in it.

Some weasel took the cork out of my lunch.

America will tolerate the taking of a human life without giving it a second thought. But don’t misuse a household pet.

Just because a chicken was born in the oven doesn’t make it a biscuit.

Men are rather reasoning than reasonable animals, for the most part governed by the impulse of passion.