The ploughshare must be pressed firmly into the ground that is overspread with noxious weeds.   Otherwise we till for the weeds and not for the good seed, which will not take root on the surface.

I don’t think it is possible to over-rate the hardness of the first close struggle with any natural passion, but indeed the easiness of later steps is often quite beyond one’s expectations.

…..our virtues are habits as much as our vices. …..

If you once allow yourself to fall into a habit of evil of whatever kind, the idea that you are helpless, that you are made so, that it is your nature, will very speedily creep in and try to lay hold of your mind.

Strength of character lies not in demanding special circumstances, but in mastering and using any that may be given. 

…..be called a laggard, make less money, accomplish less work than they, but be what you were meant to be and can be.

Enthusiasm is one of the most powerful engines of success.   When you do a thing, do it with your might.   Put your whole soul into it.