Never underestimate your own ignorance.
We must not again underestimate the Japanese.
It is always dangerous to underestimate anybody.
Sometimes people - especially people over 40 - underestimate what they really are capable of. They believe they're not capable of doing something great. I tell people who are over 40, "I don't want your best. I want better than that. I want better than what you perceive your best is. "
Never underestimate the importance of the beginning. Of anything. The beginning has the seeds of everything else to come.
I have one thing to say to those non-believers. Don't ever underestimate the heart of a champion.
I never underestimate the power of hot rollers for your hair and eyelash curlers for your eyelashes.
Never underestimate a man's ability to make you feel guilty for his mistakes.
You cannot underestimate the influence of Shakespeare.
Don’t underestimate the value of irony—it is extremely valuable.
Too often we underestimate the power of a touch.
Never underestimate the desire to bolt.
Never underestimate how extraordinarily difficult it is to understand a situation from another person's point of view.
To say that people would cease to come to California if they would have to pay more taxes is to underestimate the advantages of being in California - mightily.
But we must not underestimate the potency of the mathematical process of abstraction. A surprising variety of things happen to have both magnitude and direction and to combine according to the parallelogram law; and many of them are not at all reminiscent of journeys.
Never underestimate the effect of clutter on your life.
We vastly underestimate the power of transformation of mind.
Passion is the driver of achievement in all fields. Some people love doing things they don't feel they're good at. That may be because they underestimate their talents or haven't yet put the work in to develop them.
But you are the average of the five people you associate with most, so do not underestimate the effects of your pessimistic, unambitious, or disorganized friends. If someone isn't making you stronger, they're making you weaker.
In show business, never underestimate the power of saying "no".