In proportion as our cares are employed upon the future, they are abstracted from the present, from the only time which we can call our own, and of which, if we neglect the apparent duties to make provision against visionary attacks, we shall certainly counteract our own purpose.

The next best thing to knowing something is knowing where to find it.

Scarce any man becomes eminently disagreeable but by a departure from his real character, and an attempt at something for which nature or education has left him unqualified.

For life affords no higher pleasure, than that of surmounting difficulties, passing from one step of success to another, forming new wishes and seeing them gratified. He that labours in any great or laudable undertaking, has his fatigues first supported by hope, and afterwards rewarded by joy... To strive with difficulties, and to conquer them, is the highest human felicity.

Let him go abroad to a distant country; let him go to some place where he is not known. Don't let him go to the devil, where he is known.

To expect that the intricacies of science will be pierced by a careless glance, or the eminences of fame ascended without labour, is to expect a peculiar privilege, a power denied to the rest of mankind; but to suppose that the maze is inscrutable to diligence, or the heights inaccessible to perseverance, is to submit tamely to the tyranny of fancy, and enchain the mind in voluntary shackles.

All wonder is the effect of novelty on ignorance.