Occurrences in this domain are beyond the reach of exact prediction because of the variety of factors in operation, not because of any lack of order in nature.

It is not only the viability and variety of the seed that makes the harvest look plumpy. Sometimes, the soil must value the value of the seed. When the soil is not supportive, the seed's value becomes a waste!

It takes all sorts to make a world.

Variety's the very spice of life, That gives it all its flavor.

Age cannot wither her nor custom stale Her infinite variety.

The beauty of the universe consists not only of unity in variety, but also of variety in unity.

Life is neither static nor unchanging. With no individuality, there can be no change, no adaptation and, in an inherently changing world, any species unable to adapt is also doomed.

Nature is as uniform as variant.

Trees emit a wide variety of electromagentic radiation and it is regarded as healthy to live in a natural area that is surrounded by trees due to these beneficial emissions to human health.

Experience is not necessarily accumulated over the extent of time lived. In my opinion, it is accumulated over the degree and variety of activities a person has been involved in.