Anything that makes weak - physically, intellectually and spiritually, reject it as poison.

Of puns it has been said that those who most dislike them are those who are least able to utter them.

To wear your heart on your sleeve isn't a very good plan; you should wear it inside, where it functions best.

I speak for the trees, for the trees have no tongues.

Sometimes glass glitters more than diamonds because it has more to prove.

A scientific man ought to have no wishes, no affections, - a mere heart of stone.

I am not now That which I have been.

That which can be asserted without evidence, can be dismissed without evidence.

The thing I lose patience with the most is the clock. Its hands move too fast

I've been looking for a girl like you - not you, but a girl like you.

Liberty, according to my metaphysics is a self-determining power in an intellectual agent. It implies thought and choice and power.

The good times of today are the sad thoughts of tomorrow.

Anger makes dull men witty, but it keeps them poor.

Everyone is born a genius, but the process of living de-geniuses them.

We often discover what will do by finding out what will not do; and probably he who never made a mistake never made a discovery.

The two offices of memory are collection and distribution.

In terms of an identity, an identity reflects an individuality, by definition. And, if there is a quality present, it is recognizable and it can be named. If you can't name it, it means you don't recognize it.

Will and intellect are one and the same thing.

He who possesses most must be most afraid of loss.

Authority, without any condition and reservation, belongs to the nation.

No flying machine will ever fly from New York to Paris.