If an elderly respected expert in a given field tells you that something can be done he is almost certainly right. If an elderly respected expert in a given field tells you that something is impossible, he is almost certainly wrong.

There are things which cannot be taught in ten easy lessons, nor popularized for the masses; they take years of skull sweat.

If you are part of a society that votes, then do so. There may be no candidates and no measures you want to vote for ... but there are certain to be ones you want to vote against. In case of doubt, vote against. By this rule you will rarely go wrong.

A monarch's neck should always have a noose around it. It keeps him upright.

By the data to date, there is only one animal in the Galaxy dangerous to man -- man himself. So he must supply his own indispensable competition. He has no enemy to help him.

Liberty is never unalienable; it must be redeemed regularly with the blood of patriots or it always vanishes. Of all the so-called natural human rights that have ever been invented, liberty is least likely to be cheap and is never free of cost.

Take sides! Always take sides! You will sometimes be wrong - but the man who refuses to take sides must always be wrong.