Subhashita says

The crow is black, and so is the cuckoo. What is the difference between the two ? It is when spring arrives that the crow is identified as the crow, and the cuckoo, the cuckoo.

A Chinese Proverb says

One who smiles rather than angers is always stronger

Subhashita says

Inferior men do not start (any endeavor) with the fear of obstructions.
Average men, stop an endeavor when they are faced with problems.
However, even though they are struck again and again by disaster,superior men never give up an endeavor that they have undertaken.

Jim Rohn says

Let others lead small lives, but not you.
Let others argue over small things, but not you.
Let others cry over small hurts, but not you.
Let others leave their future in someone else's hands, but not you.

Dorothy Nevill says

The real art of conversation is not only to say the right thing at the right place but to leave unsaid the wrong thing at the tempting moment.

Eric Hoffer says

It is easier to love humanity as a whole than to love one's neighbour.

From "Wings of Fire"

Don't worry and fret, fainthearted,
The chances have just begun,
For the best jobs haven't been started,
The best work hasn't been done.