Don't overestimate the decency of the human race. - H. L. Mencken
There is probably an element of malice in our readiness to overestimate people - we are, as it were, laying up for ourselves the pleasure of later cutting them down to size. - Eric Hoffer
Never underestimate yourself when you do what is right. Never overestimate yourself when you do what is wrong. - Roy Bennett
We tend to overestimate the effect of a technology in the short run and underestimate the effect in the long run. - Roy Amara
However, robust evidence shows that people systematically overestimate the probability of positive future contingencies, and underestimate the probability of negative ones — only those who are depressed or dysphoric come to accurate assessments. - Daniel Nettle
Don't overestimate your emotions because emotional injuries can disturb you but it can not defeat you. - Amit Kalantri
Never underestimate your power to change yourself; never overestimate your power to change others. - Wayne W. Dyer
Don't overestimate everyone else and underestimate yourself - Tanya Burr