Enthusiasm is followed by disappointment and even depression, and then by renewed enthusiasm. -- Murray Gell-Mann

Some suggestions for you :

If man thinks about his physical or moral state he usually discovers that he is ill.

I was willing to accept what I couldn't change.

Love becomes greater and nobler in calamity.

The only sin in the world is ignorance.

Union gives strength.

When people are free to choose, they choose freedom.

If you pay that price daily by planning and preparing and working to become the right kind of person, then you can legitimately expect to have all that life has to offer.

A majority of young people seem to develop mental arteriosclerosis forty years before they get the physical kind. Another question: why do some people remain open and elastic into extreme old age, whereas others become rigid and unproductive before they're fifty?

If nature is your teacher, your soul will awaken.

Life is whatever we conceive it to be.

Unbeing dead isn't being alive.

The world is full of good people who do bad things!

If it isn't urgent, worry about it later.

Nature is the art of God.