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.

Common sense is not so common.

Forewarned, forearmed. To be prepared is half the victory.

The two offices of memory are collection and distribution.

It ain't over 'til it's over.

Genius is sorrow's child.

Courage is not simply one of the virtues, but the form of every virtue at the testing point.

To turn really interesting ideas and fledgling technologies into a company that can continue to innovate for years, it requires a lot of disciplines.

Face the facts of being what you are, for that is what changes what you are.

Don't take the wrong side of an argument just because your opponent has taken the right side.

Tell me thy company, and I shall tell thee what thou art.

After all, science is essentially international, and it is only through lack of the historical sense that national qualities have been attributed to it.

At the heart of all beauty lies something inhuman.

The mind that finds its way to wild places is the poet's; but the mind that never finds its way back is the lunatic's.

There are no facts, only interpretations.

Sunlight is painting.

Real stupidity beats artificial intelligence every time.

It's better to be unhappy alone than unhappy with someone.

Few men have virtue to withstand the highest bidder.

When people talk of the freedom of writing, speaking or thinking I cannot choose but laugh. No such thing ever existed. No such thing now exists; but I hope it will exist. But it must be hundreds of years after you and I shall write and speak no more.

Light thinks it travels faster than anything but it is wrong. No matter how fast light travels, it finds the darkness has always got there first, and is waiting for it.