The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants.

It is requisite for the relaxation of the mind that we make use, from time to time, of playful deeds and jokes.

It doesn't hurt to feel sad from time to time.

I learn something in the interviews from time to time.

We all have our family issues from time to time.

In the city, a lot of crime happens, a lot of violence happens from time to time.