Common Sense

Common sense is the knack of seeing things as they are, and doing things as they ought to be done.
C. E. Stowe

Difficult

Anticipate the difficult by managing the easy.
Lao Tzu

Imagination

Imagination is more important than knowledge. For knowledge is limited to all we now know and understand, while imagination embraces the entire world, and all there ever will be to know and understand.
Albert Einstein

Speak

Wise men speak because they have something to say; Fools because they have to say something.
Plato quotes