Life is not a static thing. The only people who do not change their minds are incompetents in asylums, who can't, and those in cemeteries.

We cannot remain consistent with the world save by growing inconsistent with our past selves.

There is something in the pang of change More than the heart can bear, Unhappiness remembering happiness.

Through loyalty to the past, our mind refuses to realize that tomorrow's joy is possible only if today's makes way for it; that each wave owes the beauty of its line only to the withdrawal of the preceding one.

The more things change, the more they remain the same.

Progress is a nice word. But change is its motivator. And change has its enemies.

The greatest of the changes that science has brought is the acuity of change; the greatest novelty the extent of novelty.

Time, in the turning-over of days, works change for better or worse.

It's the most unhappy people who most fear change.

Progress is impossible without change, and those who cannot change their minds cannot change anything.