Let us not wonder if something happens which never was before, or if something doth not appear among us with which the ancients were acquainted.

I don't need a friend who changes when I change and who nods when I nod; my shadow does that much better.

The mind is not a vessel to be filled but a fire to be kindled.

An imbalance between rich and poor is the oldest and most fatal ailment of all republics.

When Demosthenes was asked what was the first part of Oratory, he answered, "Action," and which was the second, he replied, "action," and which was the third, he still answered "Action.

Know how to listen, and you will profit even from those who talk badly.

The real destroyer of the liberties of the people is he who spreads among them bounties, donations and benefits.

Barba non facit philosophum

To make no mistakes is not in the power of man; but from their errors and mistakes the wise and good learn wisdom for the future.

Time is the wisest of all counselors.

No beast is more savage than man when possessed with power answerable to his rage.

You must work to live, not live to work.

Perhaps a seemingly dull, boring person is not a person who lacks personality, but rather a person with so much personality most other things bore them.

A wise man hears one word and understands two.

To me there has never been a higher source of earthly honor or distinction than that connected with advances in science.

It may be that some little root of the sacred tree still lives. Nourish it then, that it may leaf and bloom and fill with singing birds.

Everybody ages. Everybody dies. There is no turning back the clock. So the question in life becomes: What are you going to do while you're here

...instead of offering me a Garibaldi biscuit, she asked me with that faint lisp of hers, to 'have some squashed flies, George'.

The PhD student is someone who forgoes current income in order to forgo future income.

Almost any poem has to be read twice, first for strangeness, second for clarity.

Man is not on the earth solely for his own happiness. He is there to realize great things for humanity.