bijam mam sarva-bhutanam
viddhi partha sanatanam
buddhir buddhimatam asmi
tejas tejasvinam aham
"O son of Pritha, know that I am the original seed of all existences, the intelligence of the intelligent, and the prowess of all powerful men."
Aham = I [Sri Krishna] am, buddhi =intelligence, buddhimatam = among intellectuals, tejas = brilliance, tejasvinam = among brilliant persons. Sarva bhuthanam = in every living being or matter, mam = I [Sri Krishna] am, sanathanam = ancient, bijam = seed or cause, viddhi = understand. Partha = Arjuna is addressed as the son of Pritha, which means he is the son of Sri Krishna's aunt. A close relative like him should understand Who Sri Krishna was. Normally, people close to a person might not know the greatness of that person. By saying bijam or seed, we might think He is like a seed which is responsible for a tree to grow. But this aspect He had already told in Chapter 4. He told He is the cause for all matters. Here He is not to be faulted with repeating the same, but a different interpretation is to be seen. He is the cause for all changes in whatever we see in this world. As an example, we take curd, buttermilk, butter and ghee. These are not available as such; but milk has to be processed and fermented to obtain these. Milk has changed into these products. Similarly, we take different vegetables, fruits and food for nourishment of the Body. Each item has a target in the body. Some improve the calories, some for carbohydrates, some improve eye sight, etc. We can not directly take, say for example, carbohydrates or proteins. We eat a particular vegetable or fruit, which apart from the taste, has the particular need for the body. These items have to be processed and after eating, the body system assimilates and converts to the various needs like vitamins, proteins, etc and reaches the destination like blood or brain. Sri Krishna tells that He is this Agent for assimilation and conveying to various parts of the system. So, sarva bhutanam means all those matters which are subject to changes. Bijam means the Agent. He is the taste in all matters, and this was told already. But here, all processes and the Agent, Which carries such changes is the Lord. Tejasvi means brilliant persons. It means the skills in which such persons exemplify. From this we understand that the strength of Garuda or Hanuman , is the Lord.