Thou shalt abstain, Renounce, refrain.

Don't dissipate your powers; strive to concentrate them. Genius thinks it can do whatever it sees others doing, but it will surely repent of every ill-judged outlay.

Know'st thou yesterday, its aim and reason? Work'st thou will today for worthier things? Then calmly wait the morrow's hidden season, And fear thou not, what hap soe'er it brings

How can we learn self-knowledge? Never by taking thought but rather by action. Try to do your duty and you'll soon discover what you're like.

The best benefit we derive from history is the enthusiasm it excites.

To accept good advice is but to increase one's own ability.

What by a straight path cannot be reached by crooked ways is never won.