It would be difficult to define the limits of his reading.

You must not let anyone define your limits because of where you come from. Your only limit is your soul.

— Walt Disney

The only way to define your limits is by going beyond them.

— Arthur C. Clarke

To define the era we live in is very difficult. How do we define it? We define it by music.

— Donatella Versace

It is just because civilization is ever evolving, changing, and becoming more complicated, that experts find it so difficult to define it in explicit…

— Arthur Keith

Yoga is a spectacularly multifaceted phenomenon, and as such is very difficult to define because there are exceptions to every conceivable rule.

— Georg Feuerstein

It is notoriously difficult to define the word living.

— Francis Crick

Jews are a singular confusion — difficult to define, awkward to describe, impossible to understand. All the virtues, all the vices, every pleasure, every…

— Israel Shenker

There are so many different kinds of relationships, so it's sort of difficult to define what is considered normal.

— Annette Bening

Trust. Such a simple word yet difficult to define.

— Suella Braverman

There is nothing more difficult to define than an aphorism.

— Umberto Eco

It is as difficult to define or classify Islamic cinema as it would be a Christian, Jewish or Buddhist one.

— Tariq Ali

“To each, or about each, of his colleagues he had said at one time or other, something... something impossible to recall in this or…

— Vladimir Nabokov

Trust is difficult to define, but we know when it's present and when it's not.

— Warren G. Bennis

“It was difficult to define her beyond saying that she seemed to exist only as a hostess, not so much from any exaggerated instinct…

— Edith Wharton

It is difficult to define love; all we can say is, that in the soul it is a desire to rule, in the mind…

— Francois de La Rochefoucauld