To err is human. To repeat error is of the Devil.

Other men's sins are before our eyes; our own are behind our backs.

Speech is the mirror of the mind.

There are many things akin to highest deity that are still obscure. Some may be too subtle for our powers of comprehension, others imperceptible to us because such exalted majesty conceals itself in the holiest part of its sanctuary, forbidding access to any power save that of the spirit. How many heavenly bodies revolve unseen by human eye!

When some state or other offered Alexander a part of its territory and half of all its property he told them that 'he hadn't come to Asia with the intention of accepting whatever they cared to give him, but of letting them keep whatever he chose to leave them.' Philosophy, likewise, tells all other occupations: 'It's not my intention to accept whatever time is leftover from you; you shall have, instead, what I reject.' Give your whole mind to her.

Luck is preparation multiplied by opportunity.

Unfamiliarity lends weight to misfortune, and there was never a man whose grief was not heightened by surprise.