Problems are not stop signs, they are guidelines.
The most effective way to do it, is to do it.
Things do not happen. Things are made to happen.
Leap, and the net will appear.
It's always too early to quit.
Be thine own palace, or the world's thy jail.
You never know what motivates you.
After a storm comes a calm.
The dog that trots about finds a bone.
Be gentle to all and stern with yourself.
They should hold themselves absolutely upon the immovable foundation of truth and nature, whereby alone they can save themselves from misapprehensions and from the danger of being entirely carried away from reality into mere dreams and fictions.