The truth is that all of us attain the greatest success and happiness possible in this life whenever we use our native capacities to their greatest extent.

Things that upset a terrier may pass virtually unnoticed by a Great Dane.

It is very often asserted that fear is destructive. Yet this is not entirely true; when fear is felt about things that truly threaten security, it is protective. It is very fortunate that humans have an almost unlimited capacity for learning fears; otherwise we would have been eliminated long ago.

No one who has ever brought up a child can doubt for a moment that love is literally the life-giving fluid of human existence

Men err when they think they can be inhuman exploiters in their business life, and loving husbands and fathers at home.

For without love we will lose the will to live. Our mental and physical vitality is impaired, our resistance is lowered, and we succumb to illnesses that often prove fatal. We may escape actual death, but what remains is a meager and barren existence, emotionally so impoverished that we can only be called half alive.

A sense of curiosity is nature's original school of education.