Solitude does not necessarily mean living apart from others; rather, it means never living apart from one's self. It is not about the absence of other people, it is about being fully present to ourselves, whether or not we are with others.
Meditate deeply ... reach the depths of the source. Branching streams cannot compare to this source! Sitting alone in a great silence, even though the heavens turn and the earth is upset, you will not even wink.