Sentence examples similar to a light cant from inspiring English sources

If a character is not well rounded, he's not really a character at all, or a genuine depiction of a human being because the light can't exist without the dark.

If a character is not well rounded, he's not really a character at all, or a genuine depiction of a human being because the light can't exist without the dark, and Patrick's playfulness can't exist without his profound sadness and longing for love.

What about Einstein's Laws of Relativity stating that an object slower than light can't increase its speed past that of light?

Because light can't escape a black hole, seeing what's inside it is impossible.

A sport that stops for bad light can't really muster much murkiness.

Because the sun is such a hot, dense ball of gas, light can't get through it.

But it's an early tuck-in, because the first light can't be missed in these parts.

Light can't escape, so how can sound?

Or perhaps there is, but light can't reach it.

But that can't be right, because the numbers say that light can't go faster or slower.

In 1971 John Archibald Wheeler named black holes, based on the idea that light can't escape from them.