The attitude of unhappiness is not only painful, it is mean and ugly. What can be more base and unworthy than the pining, puling, mumping mood, no matter by what outward ills it may have been engendered? What is more injurious to others? What less helpful as a way out of the difficulty? It but fastens and perpetuates the trouble which occasioned it, and increases the total evil of the situation. At all costs, then, we ought to reduce the sway of that mood; we ought to scout it in ourselves and others, and never show it tolerance.

A chain is no stronger than its weakest link, and life is after all a chain.

If you care enough for a result, you will most certainly attain it.

The good or bad is not in the circumstance, but only in the mind...that encounters it.

... no bell in us tolls to let us know for certain when truth is in our grasp.

The essence of genius is to know what to overlook.

If you only care enough for a result, you will almost certainly attain it. Only you must, then, really wish these things, and wish them exclusively, and not wish at the same time a hundred other incompatible things just as strongly.